220212100122021 has 24 divisors (see below), whose sum is σ = 376988615849664. Its totient is φ = 125835485783040.

The previous prime is 220212100121983. The next prime is 220212100122031. The reversal of 220212100122021 is 120221001212022.

It is a happy number.

220212100122021 is a `hidden beast` number, since 220 + 21 + 210 + 0 + 12 + 202 + 1 = 666.

It is not a de Polignac number, because 220212100122021 - 2¹³ = 220212100113829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220212100121985 and 220212100122003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220212100122031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64730186460 + ... + 64730189861.

It is an arithmetic number, because the mean of its divisors is an integer number (15707858993736).

Almost surely, 2^{220212100122021} is an apocalyptic number.

220212100122021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

220212100122021 is a deficient number, since it is larger than the sum of its proper divisors (156776515727643).

220212100122021 is an equidigital number, since it uses as much as digits as its factorization.

220212100122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129460376343 (or 129460376331 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 220212100122021 its reverse (120221001212022), we get a palindrome (340433101334043).

The spelling of 220212100122021 in words is "two hundred twenty trillion, two hundred twelve billion, one hundred million, one hundred twenty-two thousand, twenty-one".